Collaborative Research: CEDAR--Application of the RENOIR System in Brazil to Study the Gravity Wave Trigger Mechanism In the Production of Equatorial Spread F and Scintillations

合作研究：CEDAR——应用巴西RENOIR系统研究赤道扩散F和闪烁产生中的重力波触发机制

• 批准号: 0940217
• 负责人: John Meriwether
• 金额: $ 15.38万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-15 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0940217&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Application; RENOIR

This project is a 3-year collaborative effort between University of Illinois and Clemson University. The objective is to utilize observations from a suite of instruments newly deployed in northeastern Brazil to study the effects caused by thermosphere-ionosphere (TI) coupling and equatorial plasma instabilities, particularly those effects that are initiated by thermospheric gravity wave (GW) activity. The Remote Equatorial Nighttime Observatory for Ionospheric Regions (RENOIR) consists of two Fabry-Perot interferometers (FPI), a single wide-field imaging system, a dual-frequency GPS receiver, and two arrays of single-frequency GPS scintillation monitors. The two FPI instruments will be used in a bi-static configuration to measure thermospheric wind and temperature fluctuations within a common volume region. This will provide evidence for gravity wave activity that is one of the suggested trigger mechanisms for the production of equatorial spread-F (ESF) and plasma bubbles. ESF activity will be documented through two-dimensional maps of 630.0-nm and 777.4-nm nightglow intensities using the wide-field airglow imaging system. In addition, as part of these routine observations, GPS measurements of the total electron content (TEC) and scintillation properties associated with ionospheric irregularities will be made. RENOIR in Brazil represents an international collaboration between Clemson University, the University of Illinois, the Instituto Nacional de Pesquisas Espaciais (INPE), and the Federal University at Campina Grande. Students from institutions in both the United States and Brazil will be involved in all aspects of this project, enhancing their education while training the next generation of scientists and engineers. The results of this project will advance the understanding of equatorial ionospheric irregularities, which has direct societal benefits through the adverse effects these irregularities can have on trans-ionospheric radio wave propagation

该项目是伊利诺伊大学和克莱姆森大学为期三年的合作成果。 目标是利用巴西东北部新部署的一套仪器的观测结果来研究热层-电离层（TI）耦合和赤道等离子体不稳定性造成的影响，特别是由热层重力波（GW）活动引发的影响。电离层区域远程赤道夜间天文台（RENOIR）由两个法布里-珀罗干涉仪（FPI）、一个宽视场成像系统、一个双频GPS接收器和两个单频GPS闪烁监视器阵列组成。两台 FPI 仪器将采用双基地配置来测量公共体积区域内的热层风和温度波动。这将为重力波活动提供证据，重力波活动是产生赤道扩散-F（ESF）和等离子体气泡的建议触发机制之一。 ESF 活动将使用宽视场气辉成像系统通过 630.0 nm 和 777.4 nm 夜光强度的二维图来记录。 此外，作为这些常规观测的一部分，还将对总电子含量（TEC）和与电离层不规则性相关的闪烁特性进行 GPS 测量。 巴西的 RENOIR 代表了克莱姆森大学、伊利诺伊大学、国家空间研究所 (INPE) 和大坎皮纳联邦大学之间的国际合作。 来自美国和巴西院校的学生将参与该项目的各个方面，加强他们的教育，同时培训下一代科学家和工程师。 该项目的结果将增进对赤道电离层不规则性的理解，这些不规则性可能对跨电离层无线电波传播产生不利影响，从而产生直接的社会效益